1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/timer/sifive,clint.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: SiFive Core Local Interruptor 8 9maintainers: 10 - Palmer Dabbelt <palmer@dabbelt.com> 11 - Anup Patel <anup.patel@wdc.com> 12 13description: 14 SiFive (and other RISC-V) SOCs include an implementation of the SiFive 15 Core Local Interruptor (CLINT) for M-mode timer and M-mode inter-processor 16 interrupts. It directly connects to the timer and inter-processor interrupt 17 lines of various HARTs (or CPUs) so RISC-V per-HART (or per-CPU) local 18 interrupt controller is the parent interrupt controller for CLINT device. 19 The clock frequency of CLINT is specified via "timebase-frequency" DT 20 property of "/cpus" DT node. The "timebase-frequency" DT property is 21 described in Documentation/devicetree/bindings/riscv/cpus.yaml 22 23properties: 24 compatible: 25 items: 26 - enum: 27 - sifive,fu540-c000-clint 28 - starfive,jh7100-clint 29 - canaan,k210-clint 30 - const: sifive,clint0 31 32 description: 33 Should be "<vendor>,<chip>-clint" and "sifive,clint<version>". 34 Supported compatible strings are - 35 "sifive,fu540-c000-clint" for the SiFive CLINT v0 as integrated 36 onto the SiFive FU540 chip, "canaan,k210-clint" for the SiFive 37 CLINT v0 as integrated onto the Canaan Kendryte K210 chip, and 38 "sifive,clint0" for the SiFive CLINT v0 IP block with no chip 39 integration tweaks. 40 Please refer to sifive-blocks-ip-versioning.txt for details 41 42 reg: 43 maxItems: 1 44 45 interrupts-extended: 46 minItems: 1 47 maxItems: 4095 48 49additionalProperties: false 50 51required: 52 - compatible 53 - reg 54 - interrupts-extended 55 56examples: 57 - | 58 timer@2000000 { 59 compatible = "sifive,fu540-c000-clint", "sifive,clint0"; 60 interrupts-extended = <&cpu1intc 3>, <&cpu1intc 7>, 61 <&cpu2intc 3>, <&cpu2intc 7>, 62 <&cpu3intc 3>, <&cpu3intc 7>, 63 <&cpu4intc 3>, <&cpu4intc 7>; 64 reg = <0x2000000 0x10000>; 65 }; 66... 67